Home / 13,149.40-18,144.54-7,484.88

Finding the Fourth Proportional to 13,149.40, 18,144.54 and 7,484.88

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Solution

The fourth proportional to 13,149.40, 18,144.54 and 7,484.88 is: 10,328.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.40 : 18,144.54 = 7,484.88 : x
  2. Step 2: Convert to fraction form
    13,149.40/18,144.54 = 7,484.88/x
  3. Step 3: Cross multiply
    13,149.40x = 18,144.54 × 7,484.88
  4. Step 4: Simplify right side
    13,149.40x = 135,809,704.56
  5. Step 5: Solve for x
    x = 135,809,704.56/13,149.40
  6. Step 6: Final answer
    x = 10,328.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.